Paddle-wheel



No. 6l|,293. Patented Sept. 27, 1898. J. s. TERRELL.

PADDLE WHEEL.

(Appiication filed Nov. 27, 1897.)

(No Model.)

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UNITED STATES PATENT @EEicE.

JOHN S. TERRELL, OF MARSHALL, MISSOURI.

PADDLE-WHEEL.

SPECIFICATION forming part of Letters Patent No. 611,293, dated September 27, 1898. Application filed November 2 7, 1897. Serial No. 659 ,994=. (N model.)

' To all whom it may concern:

- move in stationary cams 7.

Be it known that I,JOHN S.TERRELL,0fMarshall, in the county of Saline and State of Missouri, have invented certain new and usef ul Improvements in Paddle-WVheels and W'afer-Wheels, and I do hereby declare the fol lowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertainsto make and use the same.

My invention is an improvement in paddlewheels for propelling purposes.

My object is to construct a paddle-wheel having paddle-blades so arranged as to enter the water on edge or vertically, to remain vertical while being forced through the water, and to pass out of it vertically. Such a paddle-wheels usefulness would consist, first, in saving the power now lost in forcing the paddle-blades into the water and lifting them out again when in use; second, as the proposed blades would at all times be vertical to the water they would exert a greater propelling force; third, as proposed blades would enter the water on edge no power would be lost, and in consequence the blades could be used deeper in the water, thus better utilizing the known fact that water resistance rapidly increases as depth increases.

The accompanying drawings, with this specification, are intended to fully describe and explain my alleged invention.

Figure 1 is a side elevation of paddle-wheel. Fig. 2 is a transverse section of Fig. 1.

In each of the figures, 1 indicates the paddle-blades, which are riveted or otherwise firmly fixed to shafts 2, which are journaled through and adapted to turn in wheel-rims 3, and have arms f firmly keyed or otherwise fixed onto their ends on outer sides of wheelrims 3. These arms 4: thus become integrally a part of the paddle-blades, which must turn with the arms as they turn, and be thereby controlled by them, as hereinafter set forth. These arms 4: terminate in outwardlyextending horizontal journals 5, (see Fig. 2,) on which are journaled rollers 6, adapted to These cams are two in number to each wheel, are continuous,

are identical in everyparticular, have. inner and outer flanges throughout their entire circuit, and are so fastened to the inner sides of wheel-house as to engage the rollers 6 between said flanges. The cams .7 being fixed and the arms 4 movable, it is evident that the shape or curvature of the cams must control the position of the arms, and they in turn must control the blades when the wheel is rotated.

To illustrate the action of my improvement, it must be understood that the wheel is to be so placed on the vessel as to entirely submerge the lower paddle-blades. Beginning at A, Fig. 1, the blade has just reached the water-line W, and at l) is entirely submerged. The lower section of each blade is slightly longer thanthe upper?l. e., the distance from shaft 2 to lower edge of paddleblade is greater than from shaft to upper edgeand this fact tends to force the blade to turn; but being fixed to shaft the turning action is transmitted to the arms 4, and thence to rollers 6, which are thus pressed against the inner flange of cam 7, along which they roll as the wheel revolves till 0 is reached. At 0 the cams 7 are at such distance from wheel-rims 3 as to free the rollers 6 from the inner flanges, and the water-pressure forces them against the outer flanges, along which they roll till released from water-pressure at c. From ethey are held against outer flanges by gravitation till the reversing-point F is reached.

F is an upward bend of the cams into which the rollers pass and, striking against their opposite sides, are held back till the blades are pointed forward in proper position to enter the water at A.

It will be readily understood that as both sides of wheel and cams exactly coincide the wheel would reverse as well as go forward.

In the form of cam illustrated in Fig. 1 it is apparent that the lower edges of the blades 1 must pass over the upper edges of each succeeding blade at about e and of each preceding blade at about A when the wheel is revolved.

Having thus described the construction and use of my alleged invention, I claim as new and useful the following and ask Letters Patent therefor:

In a feathering paddle-wheel, the combination of two identical, continuous, inwardly grooved or channeled cams, eccentric in shape,

in rims 0f paddle-wheel; paddle-blades firmly fixed to said shafts between wheel-rims, parallel with before-mentioned arms and at a point a little above center of blades; all substantially as and for the purposes hereinbefore set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

J N O. S. TERRELL.

"Witnesses:

J AS. M. TURNER, T. F. HUPP. 

